/*
 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */
package com.oracle.truffle.api.interop.java;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.interop.MessageResolution;
import com.oracle.truffle.api.interop.Resolve;
import com.oracle.truffle.api.nodes.Node;

@MessageResolution(receiverType = JavaFunctionObject.class)
class JavaFunctionMessageResolution {

    @Resolve(message = "EXECUTE")
    abstract static class ExecuteNode extends Node {

        @Child private ExecuteMethodNode doExecute;

        public Object access(JavaFunctionObject function, Object[] args) {
            if (doExecute == null) {
                CompilerDirectives.transferToInterpreterAndInvalidate();
                doExecute = insert(ExecuteMethodNode.create());
            }
            return doExecute.execute(function.method, function.obj, args, function.languageContext);
        }
    }

    @Resolve(message = "IS_EXECUTABLE")
    abstract static class IsExecutableNode extends Node {

        public Object access(@SuppressWarnings("unused") JavaFunctionObject receiver) {
            return Boolean.TRUE;
        }

    }

}
